Apparatus for burning heavy oils.



No.739,153. HPATENTBD SEPT. 15,1903.

F.00TTON. A

APPARATUS FOR BURNING HEAVYOILS.

' APPLIOATLOH rum) SEPT. 20. 1902.

H0 MODEL.

I m VENTOI? flank (Zita);

WITNESSES:

Q Z WM/ I.

A TTDRNE Y8.

rte. 739,153.

UNITED STATES Patented September l5,

PATENT OFFICE.

- APPARATUS FOR BURNING HEAVY OILS.

SPECIFICATION formingpart of Letters Patent No. 739,153, dated September15, 1903.

Application filed September 20. 1902. Serial No. 124,170. (No model.)

To all whom it may concern: Be it known that I, FRANK Go'rToN, a subjectof the King of Great Britain, residing in 'the city of Sydney, in theState of New South Wales, in the Commonwealth of Australia, haveinvented certain new and useful Improvements in Apparatus for BurningHeavy Oils, of which the' following is a specification. My inventionrelates to improvements in apparatus for burning heavy oils for theproduction of heat; and the object of my invention is to combine aheavyresidual oil with steam under pressure, so as to produceahighly-combustible gas, together with a continuous supply of oxygen,and thus obviate the necessity for a forced draft. Devices for thispurpose comprise. generally an oil-supply and means for introducing thesame such as a force-pump or injector-a steamsupply, a mixing-chamber,and a vaporizingretort from which the fuel escapes in a gaseous form.

My invention consists, essentially, of the combination of a heavyresidual oil with superheated steam and the subsequent vaporization ofthe former and decomposition of the latter, which results in theproduction of a highly-combustible gas and a supply of oxygen.

In the drawings I have shown a simple and efficient apparatus forapplying my invention to an ordinary steam-boiler. This apparatusconsists of a horizontal cylinder with closed ends, hereinafter calledthe mixing-chamber, the steam and oil supply pipes, and a cross-tubeleading from the mixing-chamber to the vaporizing-retort.

Figure l is a front elevation of my apparatus. Fig. 2 is a plan; Fig. 3,a horizontal section. Fig. 4 is a vertical cross-section.-

ot is the mixing-chamber.

b is the supply-pipe, which passes through the mixing-chamber in themanner shown. This pipe has a longitudinal row of perforations in thebottom thereof. b b are coiled flexible extensions of this tube providedfor Y the purpose of somewhat raising the temperature of the oil beforeintroduction ,into the mixing-chamber.

c is the vaporizing-retort,which overlies the fire in the furnace.

c is the aperture through which the gaseous fuel passes into thefurnace, where it is ignited.

dis the lateral tube passing through the cylinder and into the retort.The portion of this tube which is within t'he mixing-chamber is providedwith perforations top and bottom, while the portion within the retort iscircumferentially perforated about two-thirds of the distance,leavingthe bottom clear.

3 is a loop by means of which the position of the apparatus can bealtered, as hereinafter described.

The method of operating my invention is as follows: Assuming that steamhas been raised in the boiler with ordinary fuel and the apparatus, asabove described, placed in position, preferably on a seating secured tothe dead-plate of the furnace, with the vaporizing-retort overlying thefire and having the ends of the supply pipe I) Z? projecting through thef urnace-door, these ends are respectively attached to the oil supply(with intermediate force pump or injector) and steam-supply. Thecontrolling-valves being opened, oil and steam are simultaneouslyinjected into the mixing-chamber through the perforations in the bottomof the tube 1) and thoroughly mixed therein. From thence they passthrough the cross-tube (1 into the retort c, which, overlying thefurnace, is subjected to sufficient external heat to cause the vaporization of the oil, the carbon of which uniting with the hydrogen ofthe steam forms a highly-combustible gas, which, together with theoxygen set free from the steam ,passes into the furnace through theaperture 0 and being ignited produces an intense heat.

Roughly speaking, the oil will occupy the lower half of the space withinthe mixingchamber and the steam the upper half, and as the lateral tubedis medially placed within the said cylinder similar proportions of oiland steam will be forced into it and will be expelled from theperforations therein which are within the retort.

The gas from the retort may be projected into any part of the furnace byaltering the set of the apparatus. The loop 6 is provided to facilitatethis movement. Of course there are many other methods by whichmyinvention can be carried out, as any simple means of mixing oils ofthe class specified with steam the cylinder, a retort on the cylinderand having an aperture, and a perforated pipe providing communicationbetween the chamber and retort.

Signed at Sydney, New South Wales, this 6th day of August, 1902.

FRANK COTTON. Witnesses:

H. C. EVANS, O. WIESEMANN.

